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the metric is a symmetric tensor and is an important mathematical tool.
the metric is a symmetric tensor and is an important mathematical tool.
Dernière mise à jour : 2016-03-03
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at each point of a spacetime on which a metric is defined, the metric can be reduced to the minkowski form using sylvester's law of inertia.
at each point of a spacetime on which a metric is defined, the metric can be reduced to the minkowski form using sylvester's law of inertia.
Dernière mise à jour : 2016-03-03
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the crucial feature of tensors used in this approach is the fact that (once a metric is given) the operation of contracting a tensor of rank r over all r indices gives a number - an "invariant" - that is independent of the coordinate chart one uses to perform the contraction.
the crucial feature of tensors used in this approach is the fact that (once a metric is given) the operation of contracting a tensor of rank r over all r indices gives a number - an "invariant" - that is independent of the coordinate chart one uses to perform the contraction.
Dernière mise à jour : 2016-03-03
Fréquence d'utilisation : 1
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